Hundreds of refugees are due to commence class action against illegal detention. If successful, the judgement would set a precedent and send a signal to governments that they have a legal responsibility of care to all refugees and asylum seekers. That would be bad news for both British Prime Minister Theresa May and US President Donald Trump. May recently waived further responsibility for helping unaccompanied child refugees. The Conservative government also constructed the Calais wall and organised ‘Go home’ billboards. And President Trump has also announced a controversial crackdown on refugees. The court case concerns hundreds of refugees detained by the Australian government on Manus Island, Papua New Guinea (PNG). The government has held some of them since 2012. Law firm Slater and Gordon says the case will be: “the largest trial concerning immigration detention” in legal history. And it could set a new precedent.